Development of Api Grade Linepipe Steels at Saudi Iron & Steel Company, Hadeed

American Petroleum Institute (API) specifications for line pipes include several steel grades with wide range of mechanical properties and chemical composition. Almost all, large diameter pipes produced in the Kingdom conform to these specifications and the present demand of this market segment reaches to about 300,000 tons annually. Until recently, all material used in the Kingdom under these specification, was imported from the international market. However with the commissioning of Flat Rolling Facilities at Saudi Iron & steel Company, develop the manufacturing technology for these grades. A comprehensive productdevelopment program was therefore undertaken for commercial production of these grades with high and consistant quality. Under this program, extensive experimental work was carried out to produce the material conforming not only to the API specifications but also the customer specific requirements. Today, Hadeed is able to meet most of the local market requirement of the high strength linepipe material.